\(\frac{6}{7}< x< \frac{7}{8}\)
\(\Leftrightarrow\frac{48}{56}< x< \frac{49}{56}\)
\(\Leftrightarrow\frac{2688}{3136}< x< \frac{2744}{3136}\)
\(\Rightarrow x\in\left\{......\right\}\)
Bạn tự suy ra x nhá.
Tim mot phan so nam giua hai phan so 1/6 va 1/7
1,
Tim 1 phan so biet tu so hon mau so 8 don vi va ti so cua tu so va mau so la 5/3
2,
Hay viet cac phan so co mau so la 9 va nam giua 2 phan so 6/18 va 16/27
3,
Hay viet 4 phan so khac nhau sao cho moi phan so lon hon 5/6 va be hon 6/7
6 phan so nam giua 2 phan so 5/7 va 6/7
bai4: tim hai phan so toi gian nam giua hai phan so 2/7 va3/7 lam kieu gi
giup minh voi
minh tich 6 ban thoi nha
tim hai phan so co mau so la 7 va tu so la hai so tu nhien lien tiep biet phan so 3\4 nam giua 2 phan so do
1,
Tong cua tu so va mau so cua mot phan so nho hon 1bang 120 sau khi rút gon ta được 3/5 . Tim phan so do
2,
Tong cua tu so va mau so cua mot phan so = 92 . Hieu cua tu so va mau so = 22 .Tim phan so do
3,
Tông phan so co tu so =6 nam giua 2 phan so 1/3va1/4
Tim 3 phan so khac nhau ,biet tong cua phan so thu 1 va phan so thu 2 la 7/8 ,tong cua phan so thu 2 va phan so thu 3 la 8/7 ,tong cua phan so thu 1 va phan so thu 3 la 8/9.
1, viet 5 phan so nam giua 2 phan so 3/5 va 4/5.
2,tim 2 so biet tong cua chung bang 1/4 va thuong cua chung cung bang 1/4
tim 2 so chan biet so be bang1 phan 3 so lon va giua chung co 7 so chan